They found rgs-CaM, otherwise known as gtobacco calmodulin-like proteinh, a calcium-binding messenger protein (Calmodulin is an abbreviation for gCALcium MODulated proteIN). In tobacco this protein binds to the viral (RNA interference) suppressors (molecules produced by the virus that chemically counteract the plantsf own defenses) and inhibits the virus from impeding the plantfs defenses.

These findings have the potential to enhance the immune systems for crops that are vulnerable to pesticide-resistant viruses. The results of this research may well have an impact beyond tobacco crops. gBecause most viruses encode RNAi suppressors, this study may contribute to the development of a molecular breeding strategy to confer resistance other viruses in crops,h said Associate Prof. Nakahara.

Source: Hokkaido University

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